Respuesta :

if it's on standard position, it means is "stemming" from the origin and goes up to 8,9 then 

that simply means [tex]\bf \begin{array}{llll} 8&,&9\\ \uparrow &&\uparrow \\ x&&y \end{array}\qquad \theta=tan^{-1}\left( \cfrac{y}{x} \right)\implies \theta=tan^{-1}\left( \cfrac{9}{8} \right)[/tex]

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